POST UTME IGBINEDION UNIVERSITY 2022 Physics | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A capacitor consists of two parallel plates of area $A$ and separation $d$. If the capaci\tance of the capacitor is $C$, what is the charge on the plates?
A. CV
B. A/d
C. Cd
D. Ad
Question 2
A sound wave with frequency $f$ is traveling through a medium with speed $v$. If the wavelength of the sound wave is $\lambda$, what is the frequency of the sound wave?
A. v/\lambda
B. \lambda/v
C. f\lambda/v
D. v\lambda/f
Question 3
A radioactive sample has a half-life of 5 years. If the initial activity is 100 Bq, what is the activity after 10 years?
A. 12.5 Bq
B. 25 Bq
C. 50 Bq
D. 100 Bq
Question 4
A particle of mass 2 kg is moving in a circular path of radius 3 m with a cons\tant speed of 4 m/s. If the particle is subjected to a centripetal force of 12 N, what is the magnitude of the acceleration of the particle?
A. 2 m/s^2
B. 4 m/s^2
C. 6 m/s^2
D. 8 m/s^2
Question 5
A particle of mass 2 kg is moving in a circular path of radius 3 m with a cons\tant speed of 4 m/s. If the particle is subjected to a centripetal force of 12 N, what is the magnitude of the force?
A. 8 N
B. 12 N
C. 16 N
D. 20 N
Question 6
A particle of mass 3 kg is moving in a circular path of radius 4 m with a cons\tant speed of 6 m/s. If the particle is subjected to a centripetal force of 24 N, what is the magnitude of the force?
A. 12 N
B. 24 N
C. 36 N
D. 48 N
Question 7
A light ray passes through a prism and is re\fracted. If the angle of incidence is 30° and the angle of re\fraction is 40°, what is the angle of deviation?
A. 10°
B. 20°
C. 30°
D. 40°
Question 8
A 10 Ω resistor is connected in parallel with a 20 Ω resistor. If a 12 V battery is connected across the circuit, determine the current flowing through the 10 Ω resistor.
A. 0.6 A
B. 0.8 A
C. 1 A
D. 1.2 A
Question 9
A sound wave has a frequency of 200 Hz and a wavelength of 0.5 m. What is the speed of the wave?
A. 100 m/s
B. 200 m/s
C. 300 m/s
D. 400 m/s
Question 10
A particle of mass 2 kg is moving in a circular path of radius 3 m with a cons\tant speed of 4 m/s. If the particle is subject to a centripetal force of 12 N, what is the magnitude of the acceleration of the particle?
A. 4 m/s^2
B. 6 m/s^2
C. 8 m/s^2
D. 10 m/s^2
Question 11
A 2 kg object is attached to a horizontal, massless spring with a force cons\tant of 100 N/m. If the object is displaced by 0.5 m from its equilibrium position, determine the magnitude of the force exerted by the spring on the object.
A. 50 N
B. 75 N
C. 100 N
D. 125 N
Question 12
A spring of force cons\tant 100 N/m is stretched by 2 m. What is the potential energy stored in the spring?
A. 200 J
B. 400 J
C. 600 J
D. 800 J
Question 13
A parallel plate capacitor has plates of area 0.04 m^2 and separation 0.02 m. If the dielectric cons\tant of the material between the plates is 3, calculate the capaci\tance.
A. 1.6 x 10^-10 F
B. 3.2 x 10^-10 F
C. 4.8 x 10^-10 F
D. 6.4 x 10^-10 F
Question 14
A circuit consists of a 12 V battery, a 4 Ω resistor, and a 6 Ω resistor connected in series. If the current flowing through the circuit is 1 A, calculate the voltage drop across the 6 Ω resistor.
A. 2 V
B. 3 V
C. 4 V
D. 6 V
Question 15
A 10 Ω resistor is connected in series with a 20 Ω resistor and a 30 Ω resistor. If a 12 V battery is connected across the circuit, determine the current flowing through the 20 Ω resistor.
A. 0.2 A
B. 0.4 A
C. 0.6 A
D. 0.8 A

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